Needle-cutter.



G. OLSON.

NEEDLE CUTTER.

APPLICATION FILED MAY 5, 1917.

Patented. Mar. 12, 1918.

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GUSTAF OLSON, OF CHICAGO, ILLINOIS, ASSIGNOBOF-ONE HALETOaEIWVINw Fi' ENGEL. OF CHICAGO, ILLINOIS.

NEEDLE-CUTTER.

Application filed May 5, 1917.

To all whom it may concern:

Be itknown that I, GUs'rAr 'Onsorz, a citizen of the United States, residing at Chicago, in the county of Cook and-State of Illinois, have invented certain new and useful Improvements in Needle-Cutters, of which the following is a specification.

My inventionrelates to phonographs and has particular reference to improvements in means, tools or instruments for re-pointing the wood or fiber type of reproducer tracking point, and the invention consists in thenovel construction of instrument for this purpose, its combinations and-arrangement of parts, and its method of operation, all as hereinafter described in detail, illustrated in the accompanying drawing and more particularly pointed out in the appended claims.

In the drawing- Figure lis a vertical section through an instrument embodying-my invention.

Fig. 2 is a section taken'substantially on the line 2-2 of Fig. 1.

Fig. 3 is an enlarged section taken substantially on the line 3 3 of Fig. 1.

Fig. 4 is a front, forward, or nose-end View, on an enlarged scale, of said instrument.

Fig. 5 is an enlarged plan view of the forward end broken away.

Fig. 6 is a perspective view of the portion shown in Fig. 5, but taken in a plane at right angles to the plane of Fig. 5.

Fig. 7 is a perspective view of the instrument as a whole in a position that is the reverse of that in which it is shown in Figs. 1 to 5.

In the several views 2 and 3 represent sheet metal st-ampings formed into plierlike bodies that include handles t and 5 and are pivoted together. On the member 2 are integral and parallel pivot disks 6 and 7 which lie against and between similar disks 8 and 9 on the member 5 and move on a pivot 10. On the member 2 is a forward or gage portion ll-with a recess 12 therein, the depth of which determines the extent to which the point end of a reproducer pin 13 may be moved past a flat knife or cutter 14:. This cutter is reciprocated by rotation of the disks 6 and 7 the rotary movement of which is converted to a horizontal movement in the cutter by means of a pair of laterally extending lugs Specification of Letters Patent.

Patented Mar. 12, 1918;

Serial no. 166,691;

15 and 16 on the cutter engaged by notches 17 and 18 in the disks (i-and 7. On' the forward end of the cutter blade 14 is a beveled cutting edge 19 which is held against a flat 23 to insure close contact of the cuttin'gedgej 19 with the plate 20 and to avoid unneces sary friction. This arrangement also tends to make the blade self-sharpening. sprin 2 bears against the cutter to hold it against its bearing plate, through which, as will hereinafter appear, the pin-13, to be re-pointed or sharpened, passes and is. held against the pressure of the cutter.- The spring 24 is held near its rear end in the member 3 through the medium of 'a laterally projecting pair of 111 s 25, 26 on said springs seated in slots 27 an 28 in the handle por tion of the member 3. The gage portion 11 is held normally pressed againstthe cutter plate 20 by a spring 29 'therearend-of which'is fastened by a screw 30;

A socket, sleeve, or pinholder is formed on a plate 31 which has a threaded bore for the screw 21 and serves as its nut. 011 said plate 31 is an outwardly bent portion 32 one end of which has an acute angle bend which forms a trough 33 that is longitudinally inclined toward an opening 39 through the plate 20 and toward the cutter at an angle of about 45 degrees, or the slant of cut usually made to form a point on the three-sided pins 13 commonly used. This V-shape trough 33 forms two sides of the pin-socket or passage and a third is formed by a flat spring 3% which lies flat against the part 32, is bent away from the latter opposite the V-shape trough and is fastened by a screw or rivet 35 to the part 32. This provides a movable side 36 to the three-sided pin socket. An extension thereof in the form of a finger 37 that is curved back of the V-shape trough serves as a stop limiting the movement of the movable side of the pin socket to the width of a space 28 between said finger and the part 32 and prevents accidental overbending and damage to the spring side of the socket. The pin 13, as shown, is projected through the socket and the rectangular bearing plate opening 39 until its point-end strikes the bottom of the slot 12 in the gage portion 11, and the forward edge of said opening 39 firmly cooperates with the cutter in supporting the pin against the cutting action of said cutter. If said forward edge is sufficiently in advance of the gage end 11 to permit unobstructed passage of the pin 13 the length of the latter may be extended indefinitely and the instrument used to cut the desired pin lengths from a long rod of the proper cross section.

It will be noted that in this construction and arrangement the members 2 and 3 have a powerful leverage upon the cutter and that the latter moves in a straight line to make a clean, straight out with slight exertion on the part of the operator. I

I claim as my invention 1. In a needle cutter, the combination with a pair of pivoted together and toward each other concaved members which form a housing or inclosure therebetween, or an edged cutter and needle-holding means on one of said members, a portion of the housing wall ofthe other member being arranged and formed to provide a needle stop, said other member being constructed and arranged to form an operating lever for said cutter.

2. The combination with a needle cutter, of a pair of concavo-convex members pivoted together and forming, substantially, a chamber for operating parts open only toward the rear ends and handle portions of said members, a cutter slidably mounted on one wall of said chamber and within said chamber, rotatable disks which form two opposite walls of said chamber, cutter-operating connections between said disks and 3. In a needle cutter, the combination with a member 3, of a bearing plate, a cutter slidably mounted on said bearing plate, a

member 4 having thereon a part which forms a three-sided hood or cover over said cutter, interengaging parts on said cover and cutter whereby the latter is reciprocated by the former, a wall of said cover being an ranged and constructed as a stop normally limiting the depth of insertion of a needle into the device, an expansible holder for a needle adapted to flexibly grip same, and a passage therefor through said bearing plate and member 3 in line with said holder.

4. The combination with a pair of members pivoted together and having parts integral therewith which form a chamber, of a cutter slidably mounted on one of said members and within said chamber, an expansible needle holder having an opening therethrough and into said chamber, and a pin stop whichis the edge of the forward wall of said chamber normally interposed opposite said opening and movable out of alinement therewith to permit uninterrupted passage of a needle or of a needle blank or rod past said stop.

In testimony whereof I have hereunto signed my name.

' GUSTAF OLSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 6. 

